This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A child is riding near the outer rim of a freely-rotating playground merry-go-round. What happens if ... (Read 200 times)

ETearle

  • Hero Member
  • *****
  • Posts: 580
on: Jul 29, 2018
A child is riding near the outer rim of a freely-rotating playground merry-go-round. What happens if the child walks towards the center?
 
  What will be an ideal response?

Question 2

An astronaut leaves Earth in a spaceship at a speed of 0.960c relative to an observer on Earth. The astronaut's destination is a star system 14.4 light-years away.
 
  (One light-year is the distance light travels in one year.) According to the astronaut, how long does the trip take?
  A) 15.0 y B) 14.4 y C) 22.7 y D) 4.20 y E) 9.34 y


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Kimmy

  • Sr. Member
  • ****
  • Posts: 342
Reply #1 on: Jul 29, 2018
Answer to Question 1

The merry-go-round rotates more rapidly because the moment of inertia has decreased while the angular momentum is conserved.

Answer to Question 2

D


ETearle

  • Hero Member
  • *****
  • Posts: 580
Reply #2 on: Jul 29, 2018
TY


Kimmy

  • Sr. Member
  • ****
  • Posts: 342
Reply #3 on: Jul 29, 2018
You're welcome


« previous next »
 

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Outer Space Outer Space
Structure of a Kerr (Rotating) Black Hole Structure of a Kerr (Rotating) Black Hole
Distribution of bonding and outer nonbonding electrons in the peptide group Distribution of bonding and outer nonbonding electrons in the peptide group
Kwashiorkor The edema in this child’s belly is a classic sign of kwashiorkor Kwashiorkor The edema in this child’s belly is a classic sign of kwashiorkor
Marasmus The emaciated appearance of this child is a sign (and symptom) of marasmus Marasmus The emaciated appearance of this child is a sign (and symptom) of marasmus
Video: Bond in biological molecules (Ionic, Covalent and Hydrogen bonds)/ How atoms bond?

For a complete list of videos, visit our video library